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3 years ago

Help ASAP pleaseeeee!!!!!!!!

Mathematics

1 answer:

slamgirl [31]3 years ago

6 0

I'll help if you need me to!

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Does anyone know the answer to this!?

PolarNik [594]

Answer:

$|A_y|=\left|\begin{array}{cc}12&7\\ \\17&-51\end{array}\right|$

Step-by-step explanation:

You can use these Cramer's formulas to solve for x and y:

$x=\dfrac{|A_x|}{|A|},\\ \\y=\dfrac{|A_y|}{|A|},$

where

$|A|=\left|\begin{array}{cc}12&-13\\ \\17&-22\end{array}\right|\\ \\ \\|A_x|=\left|\begin{array}{cc}7&-13\\ \\-51&-22\end{array}\right|\\ \\ \\|A_y|=\left|\begin{array}{cc}12&7\\ \\17&-51\end{array}\right|$

So,

$|A_y|=\left|\begin{array}{cc}12&7\\ \\17&-51\end{array}\right|$

4 0

3 years ago

Find the least common denominator for these two rational expressions negative 4/x^2 6/9x

diamong [38]

Answer:

9x^2

Step-by-step explanation:

-4/x^2 6/9x

-36/9x^2 6x/9x^2

4 0

3 years ago

What is the value of h? -8h=-32.8 h=_______

Kaylis [27]

-8h = -32.8

First, divide both sides by -8. / Your problem should look like: h = 4.1

Answer: h = 4.1

6 0

3 years ago

Janae drew point A located at (-2,5), and point located at (6, -1). What is the x-coordinate of point B that bisects AC?

Sphinxa [80]

Answer:

The x coordinate is 2

Step-by-step explanation:

Given

$A = (-2,5)$

$C = (6,-1)$

Required

Determine the x coordinate of B

Since B is the bisector of AC, then B is the midpoint and will be calculated using;

$B(x,y) = (\frac{x_1 + x_2}{2},\frac{y_1 + y_2}{2})$

Considering the x coordinates alone;

$x = \frac{x_1 + x_2}{2}$

Where

$(x_1,y_1) = (-2,5)$ and $(x_2,y_2) = (6,-1)$

Substitute values for x1 and x2

$x = \frac{-2 + 6}{2}$

$x = \frac{4}{2}$

$x = 2$

Hence;

The x coordinate is 2

6 0

3 years ago

Here is the histogram of a data distribution. All class widths are 1. What is the median of the distribution? A.5 B.4 C.6 D.7

erik [133]

Answer:

Step-by-step explanation:

3 0

3 years ago